Recherche Images Maps Play YouTube Actualités Gmail Drive Plus »
Connexion
Les utilisateurs de lecteurs d'écran peuvent cliquer sur ce lien pour activer le mode d'accessibilité. Celui-ci propose les mêmes fonctionnalités principales, mais il est optimisé pour votre lecteur d'écran.

Brevets

  1. Recherche avancée dans les brevets
Numéro de publicationUS20080061240 A1
Type de publicationDemande
Numéro de demandeUS 11/667,259
Numéro PCTPCT/EP2005/055838
Date de publication13 mars 2008
Date de dépôt9 nov. 2005
Date de priorité9 nov. 2004
Autre référence de publicationCA2586740A1, CA2586740C, CN100458378C, CN101061374A, DE102004054349A1, EP1809993A2, US8538714, WO2006051078A2, WO2006051078A3
Numéro de publication11667259, 667259, PCT/2005/55838, PCT/EP/2005/055838, PCT/EP/2005/55838, PCT/EP/5/055838, PCT/EP/5/55838, PCT/EP2005/055838, PCT/EP2005/55838, PCT/EP2005055838, PCT/EP200555838, PCT/EP5/055838, PCT/EP5/55838, PCT/EP5055838, PCT/EP555838, US 2008/0061240 A1, US 2008/061240 A1, US 20080061240 A1, US 20080061240A1, US 2008061240 A1, US 2008061240A1, US-A1-20080061240, US-A1-2008061240, US2008/0061240A1, US2008/061240A1, US20080061240 A1, US20080061240A1, US2008061240 A1, US2008061240A1
InventeursBernhard Heuft
Cessionnaire d'origineHeuft Systemtechnik Gmbh
Exporter la citationBiBTeX, EndNote, RefMan
Liens externes: USPTO, Cession USPTO, Espacenet
Testing the Intergrity of Products in Containers
US 20080061240 A1
Résumé
In order to test the integrity of products in containers, several characteristics of the products are detected with physical measuring methods and a good-bad signal is produced on the basis of the measuring results, for which purpose several of the measuring results are placed in relation to each other, which can consist in the following: the deviations of the individual measuring results from a reference value, optionally after weighting and standardization are added up and the sum is compared to a threshold value. The measuring results can also form a multidimensional area in which one or several boundary surfaces separate the good value areas from the bad value areas.
Images(2)
Previous page
Next page
Revendications(12)
1. A method for testing the integrity of a product in a container, the method comprised of:
determining a plurality of product features through the use of a plurality of physical property measurements; and
obtaining a good-bad signal for the product on the basis of correlating the results of the plurality of measurements and comparing the correlated results to a threshold value.
2. The method of claim 1, wherein the plurality of physical properties measured include color, infrared, X-ray or gamma spectroscopy, the rotation of polarized light through the product, the fill level, or the pressure inside the container.
3. The method of claim 1, further comprising:
determining the deviations of at least some of the results of the plurality of measurements from a reference value;
recording said deviations;
totaling up said deviations as a scalar value; and
comparing the scalar value with a threshold value to determine a good-bad signal.
4. The method of claim 3, wherein the results of the plurality of measurements are weighted.
5. The method of claim 3, wherein the totaling step involves the addition of the squares of the deviations.
6. The method of claim 1, wherein the plurality of product features determined as a result of the plurality of physical property measurements forms a multidimensional space in which one or more interfaces separate good and the bad value ranges from each other.
7. The method of claim 1, wherein the measurement results are linked to each other by fuzzy logic.
8. The method of claim 1, wherein the plurality of product features determined as a result of the plurality of physical property measurements are averaged over a plurality of containers.
9. The method of claim 8, wherein one or more of the plurality of product features are evaluated separately for each product in a container.
10. A method testing the integrity of a product in a container, the method comprised of:
determining at least one of the plurality of product features for a product in a given container;
obtaining an average of the at least one of the plurality of product features by obtaining the measurement of the same product feature from a plurality of containers containing the same product; and
comparing the at least one of the plurality of product features for a product in a given container with the average of the at least one of the plurality of product features in order to produce a good-bad signal.
11. A method for testing the integrity of a product in a container, the method comprised of:
determining a plurality of product features for a product in a given container;
determining a percentage deviation of each of the plurality of product features from a reference value;
totaling said percentage deviations; and
comparing a sum of said deviations with a threshold value to determine a good-bad signal.
12. The method of claim 3, wherein the totaling step involves the addition of the higher powers of the deviations.
Description
    TECHNICAL FIELD
  • [0001]
    The invention relates to a method for testing the integrity of products in containers, wherein several features of the product are detected by using physical measurement methods and a good-bad signal is produced on the basis of the measurement results.
  • [0002]
    Products in containers, in particular foods, e.g. drinks in plastic or glass bottles, can be investigated by using various physical measurement methods. The absorption of the product at specific wavelengths of light or infrared radiation can be measured, wherein the rotation of polarized light can also be measured. Similarly the absorption of X- or gamma radiation can be measured, wherein here the absorption depends on the atomic weight of the elements present in the product. By means of a high-frequency field it is possible to measure the dielectric constant which, in the case of drinks, depends in particular on the salt content. In addition to these material properties, macroscopic properties, e.g. the fill level of the product in the container or the mass of the product in the container, can also be measured. In the German patent application 10 2004 053 567.1 (application date 5 Nov. 2004, Title: Method of establishing the integrity of a product located in a container, our reference 36144-de) a given feature of the product is determined by means of two different physical measurement methods, wherein differences between the values obtained according to both measurement methods of the given feature are an indication of damage to the integrity of the product. The fill level of the product in the container can be ascertained e.g. by means of X-ray absorption and by means of damping of an HF field. Both methods must be calibrated, as the X-radiation absorption depends on the atomic weight, and the damping of the HF field on the dielectric constant, of the product. If the values obtained with both measurement methods do not correspond to the same fill level, this means that either the atomic weight of the elements present in the product or the dielectric constant of the product do not correspond to the predefined values, i.e. to a whole or unadulterated product.
  • [0003]
    A multisensor camera for quality control is known from DE-A-43 43 058 in which various imaging sensors operating on different physical principles such as b/w and colour cameras, imaging 3D sensors, imaging sensors which operate with penetrating radiation and imaging NIR spectroscopy sensors, are used together. The sensors are arranged so that they cover the same field of vision and corresponding image elements of the sensors relate to identical image elements of the product surface. The signals of the sensors are converted image-by-image, using a classifier, into a group image in which a code is allocated to each image element, corresponding to its membership of one of numerous, previously taught classes. By means of this multisensor camera it is possible to separate out shredded metal and plastic waste from a random refuse stream.
  • [0004]
    The integrity or unadulterated nature of a product in a container is at present determined by chemical laboratory tests, for which the product is taken out of the container.
  • DISCLOSURE OF THE INVENTION Technical Problem
  • [0005]
    The object of the invention is to test the integrity of a product contained in a container, in particular of a product contained in a sealed container.
  • Technical Solution
  • [0006]
    According to the invention this object is achieved by using a method of the type mentioned at the outset, by correlating several of the measurement results in order to produce the good-bad signal.
  • [0007]
    Because several features of the product are checked, integrity can be ensured with greater reliability than if only a single feature is checked.
  • [0008]
    The measurement results can be correlated in various ways. A few possibilities are listed below:
  • [0009]
    The measurement values are standardized to a reference value which is the value for a defect-free product. The standardized measurement results then give the deviation as a factor or percentage. The deviations of the measurement results from the respective reference values can be added up as scalar values. If the sum of the deviations exceeds a threshold value, a “bad” signal is produced. It is possible to weight the individual measurement results so that the individual measurement methods have a varying degree of influence on the result.
  • [0010]
    The measurement results can form a multidimensional space in which one or more interfaces separate the good and the bad value ranges from each other. This interface can be expressed by a function with a number of variables corresponding to the number of measurement results. A simple case for a mathematical equation is the spherical surface in a multidimensional space (R2=u2+v2+w2+x2 . . . ). Mixed terms can however also occur in this equation, i.e. the influencing of a measurement result can depend on the value of another measurement result. The good-bad interface does not then have a spherical shape, but any irregular shape. In practice it is simpler to read in a corresponding table of values during operation.
  • [0011]
    Finally the measurement results can also be linked to each other by fuzzy logic.
  • [0012]
    All the methods suitable for investigating the product in question can be considered as measurement methods. In the case of drink bottles these are in particular colour, IR, X-ray or gamma spectroscopy, determination of the rotation of polarized light through the product, determination of the fill level or determination of the pressure inside container.
  • [0013]
    For the determination of drinks in glass or plastic bottles, the combination of NIR-spectroscopy, the measurement of X-ray absorption and the measurement of the dielectric modulus has in particular proved successful. NIR-spectroscopy can already be regarded for itself as a plurality of measurement methods, corresponding to the number of investigated absorption peaks.
  • [0014]
    When checking individual containers filled with the product, depending on the measurement method used, relatively large deviations must in some cases be permitted as, e.g. in the case of glass or plastic bottles, the wall thickness of the container can very greatly influence the measurement result. According to a preferred method the measurement results initially of one measurement method are therefore averaged over a large number of containers. For the values averaged over a larger number of containers of the individual features of the product much smaller permitted deviations can be applied. With this version of the invention systematic product defects, whether caused intentionally or unintentionally, can therefore be recorded with high reliability.
  • [0015]
    The averaging is expediently carried out on a sliding basis, i.e. the average value is in each case formed over a specific number of the most recently checked containers. For example the last hundred containers can be used for averaging in each case.
  • [0016]
    The individual measurement results can of course additionally be evaluated in themselves in the conventional manner, i.e. if an individual measurement result does not lie within a specific range the container concerned is excluded from the further production process.
  • [0017]
    Overall the measurement results are thus used in three ways:
  • [0018]
    Each measurement result is checked for itself to ascertain whether it lies within a specific range. If it lies outside the range, the container is excluded;
  • [0019]
    The measurement results of several measurement methods are correlated, e.g. the percentage deviations from the reference values concerned are added in scalar manner, and the sum of the deviations is compared with a threshold value. They can also be introduced into a first- or higher-order equation with a corresponding number of variables and, depending on whether the product concerned in this multidimensional space lies inside or outside a good-bad interface, the container is further processed or excluded.
  • [0020]
    The average of the measurement results of the individual measurement methods is formed over a larger number of containers and this average can again, as in the first case, be compared with a reference value separately for each measurement method and/or the averages of the measurement results of several measurement methods can be correlated as stated under 2.
  • [0021]
    A particular advantage of the method according to the invention is that the container can be tested while sealed and thus at the end of the production process, added to which subsequent damage to its integrity is largely excluded.
  • BRIEF DESCRIPTION OF DRAWINGS
  • [0022]
    An embodiment example of the invention is explained below with reference to the drawing. The single FIGURE schematically shows a device for testing the integrity of drink bottles.
  • [0023]
    A number of drink bottles 10 are transported through several inspection devices 21 to 25 following each other at a small distance on a conveyor 12.
  • [0024]
    In the first and second inspection device 21, 22 the fill level of the drink in the bottle 10 is ascertained by means of X-rays and an HF field. The values ascertained for the fill level are transmitted to a control device 30 in which the values are compared.
  • [0025]
    In the third inspection device 23 the X-ray absorption in the lower, cylindrical area of the bottles 10 is measured.
  • [0026]
    In the fourth inspection device 24 the pressure inside the container is measured by means of the method known from WO 98/21557.
  • [0027]
    In the fifth inspection device 25 the absorption of a 1.06 μm infrared beam is measured.
  • [0028]
    The measured values of all the inspection devices 21 to 25 are transmitted to the control device 30.
  • [0029]
    As already mentioned, the signals from the first and second inspection devices 21, 22 are compared with each other and a fill-level-difference signal is formed from both signals. The fill-level-difference signal must not exceed a predefined threshold value S for each individual container. The values from the other three inspection devices 23, 24 and 25 are in each case compared with a reference value, wherein for each individual container the deviation from the reference value must not exceed 10%.
  • [0030]
    For each container, the percentage deviations reported by the inspection devices 23, 24 and 25 from the reference value are also added up, wherein the sum of the percentage deviations must not exceed 20%.
  • [0031]
    Furthermore the average of the fill-level-difference signals of the last hundred bottles 10 is formed and this average must not exceed one-tenth of the threshold value S. Similarly the average of the signals from the inspection devices 23, 24 and 25 of the last hundred bottles 10 is formed and this average must deviate by no more than one-fifth from the value of the respective reference values which applies to the deviation of the individual bottles 10, thus 2%.
  • [0032]
    In addition the sum of the squares of the percentage deviations of the values averaged in each case over one hundred bottles 10 is calculated and this sum must not exceed a predefined further threshold value. This threshold value is set such that an error signal is already produced if the deviations of the measured values of the inspection devices 23, 24 and 25 considered for themselves are still acceptable.
  • LIST OF REFERENCE NUMBERS
  • [0000]
      • 10 Drink bottle
      • 11 Conveyor
      • 22, 23, 24 and 25 Inspection device
      • 30 Control device
Citations de brevets
Brevet cité Date de dépôt Date de publication Déposant Titre
US3818232 *13 déc. 197218 juin 1974Nuclearay IncContainer fill level inspector with product averaging system
US3849070 *25 sept. 197219 nov. 1974Brewer S Unlimited IncApparatus for and method of determining oxygen and carbon dioxide in sealed containers
US4050824 *25 juin 197627 sept. 1977Tsn Company, Inc.Method and apparatus for inspecting bottled goods
US4109511 *16 déc. 197629 août 1978Powers Manufacturing, Inc.Method and apparatus for statistically testing frangible containers
US4926681 *8 sept. 198822 mai 1990The Boc Group PlcContainer content tester
US4991433 *21 sept. 198912 févr. 1991Applied Acoustic ResearchPhase track system for monitoring fluid material within a container
US5002397 *16 oct. 198926 mars 1991International Integrated Systems, Inc.System of fluid inspection and/or identification
US5202932 *20 août 199113 avr. 1993Catawa Pty. Ltd.X-ray generating apparatus and associated method
US5369600 *23 déc. 199229 nov. 1994Mitsubishi Jukogyo Kabushiki KaishaApparatus for measuring gas density and sugar content of a beverage within a sealed container and method of measuring the same
US5473161 *21 juin 19945 déc. 1995The Coca-Cola CompanyMethod for testing carbonation loss from beverage bottles using IR spectroscopy
US5591899 *12 juil. 19957 janv. 1997Krones Ag Hermann Kronseder MaschinenfabrikContinuously operating inspection machine for vessels
US5614672 *23 janv. 199625 mars 1997Legendre; W. J.Apparatus for measuring the liquid contents of a tank
US5750998 *16 févr. 199612 mai 1998Baxter International, Inc.Apparatus and method for non invasively identifying components of liquid medium within a bag
US5806519 *22 sept. 199515 sept. 1998Medrad, Inc.Total system for contrast delivery
US5864600 *6 févr. 199726 janv. 1999Thermedics Detection Inc.Container fill level and pressurization inspection using multi-dimensional images
US5869747 *15 mai 19979 févr. 1999William H. HulsmanFood container internal pressure analysis
US6104033 *15 juin 199815 août 2000Uop LlcMethod of determining fluid level and interface in a closed vessel
US6226081 *16 mars 19981 mai 2001Optikos CorporationOptical height of fill detection system and associated methods
US6338272 *12 nov. 199715 janv. 2002Heuft Systemtechnik GmbhMethod for determining parameters, for example level, pressure, gas composition in closed containers
US6494083 *29 juil. 199917 déc. 2002Heuft Systemtechnik GmbhMethod for monitoring closed containers
US6863860 *26 mars 20028 mars 2005Agr International, Inc.Method and apparatus for monitoring wall thickness of blow-molded plastic containers
US7012427 *16 déc. 200414 mars 2006The Regents Of The University Of CaliforniaMethods and devices for analysis of sealed containers
US7085677 *19 avr. 20041 août 2006Amazon Technologies, Inc.Automatically identifying incongruous item packages
US7339377 *10 mars 20064 mars 2008The Regents Of The University Of CaliforniaMethods and devices for analysis of sealed containers
US7407796 *6 mai 20045 août 2008The Penn State Research FoundationInterrogation of changes in the contents of a sealed container
US7624622 *24 mai 20071 déc. 2009Mocon, Inc.Method of measuring the transmission rate of a permeant through a container and determining shelf life of a packaged product within the container
US7971470 *11 avr. 20085 juil. 2011Madison Avenue Management Company, Inc.Method for detecting chemical substances in whole, closed and/or sealed containers
US20010004401 *13 déc. 200021 juin 2001Philippe DuboisProcess for inspecting the quality of an article in particular one made of glass
US20020002414 *9 mars 20013 janv. 2002Chang-Meng HsiungMethod for providing control to an industrail process using one or more multidimensional variables
US20020143513 *28 mars 20023 oct. 2002Alain CohenSimulation with convergence-detection skip-ahead
US20020168046 *8 avr. 200214 nov. 2002Hansen Per WaabenMethod and apparatus for determination of properties of food or feed
US20030023385 *5 févr. 200130 janv. 2003Emmanuel LazaridisStatistical analysis method for classifying objects
US20030140683 *2 oct. 200231 juil. 2003Basir Otman AdamReal-time system for detecting foreign bodies in food containers using ultrasound
US20040090231 *16 juil. 200313 mai 2004The Regents Of The University Of CaliforniaMethods and devices for analysis of sealed containers
US20040102864 *25 nov. 200227 mai 2004James StackSystem and method for high speed control and rejection
US20040206658 *6 mai 200421 oct. 2004The Penn State Research FoundationInterrogation of changes in the contents of a sealed container
US20050104589 *16 déc. 200419 mai 2005The Regents Of The University Of CaliforniaMethods and devices for analysis of sealed containers
US20050276907 *14 juin 200415 déc. 2005Harris Kevin MApparatus and method for inspecting golf balls using infrared radiation
US20050280414 *6 juil. 200522 déc. 2005The Regents Of The University Of CaliforniaMethods and devices for analysis of sealed containers
US20070001673 *10 mars 20064 janv. 2007The Regents Of The University Of CaliforniaMethods and devices for analysis of sealed containers
Référencé par
Brevet citant Date de dépôt Date de publication Déposant Titre
US8713993 *29 oct. 20086 mai 2014Toyo Seikan Kaisha, Ltd.Method and apparatus for inspecting pinhole in synthetic resin bottle
US9393419 *19 nov. 201419 juil. 2016Cyberonics, Inc.Implantable neurostimulator-implemented method for enhancing heart failure patient awakening through vagus nerve stimulation
US940902425 mars 20149 août 2016Cyberonics, Inc.Neurostimulation in a neural fulcrum zone for the treatment of chronic cardiac dysfunction
US941522425 avr. 201416 août 2016Cyberonics, Inc.Neurostimulation and recording of physiological response for the treatment of chronic cardiac dysfunction
US944623722 sept. 201520 sept. 2016Cyberonics, Inc.Responsive neurostimulation for the treatment of chronic cardiac dysfunction
US94522909 nov. 201227 sept. 2016Cyberonics, Inc.Implantable neurostimulator-implemented method for managing tachyarrhythmia through vagus nerve stimulation
US95048328 déc. 201429 nov. 2016Cyberonics, Inc.Neurostimulation titration process via adaptive parametric modification
US951122814 janv. 20146 déc. 2016Cyberonics, Inc.Implantable neurostimulator-implemented method for managing hypertension through renal denervation and vagus nerve stimulation
US95268987 janv. 201527 déc. 2016Cyberonics, Inc.Implantable neurostimulator for providing electrical stimulation of cervical vagus nerves for treatment of chronic cardiac dysfunction with bounded titration
US953315312 août 20143 janv. 2017Cyberonics, Inc.Neurostimulation titration process
US964301114 mars 20139 mai 2017Cyberonics, Inc.Implantable neurostimulator-implemented method for managing tachyarrhythmic risk during sleep through vagus nerve stimulation
US96692205 août 20166 juin 2017Cyberonics, Inc.Neurostimulation in a neural fulcrum zone for the treatment of chronic cardiac dysfunction
US971371917 avr. 201425 juil. 2017Cyberonics, Inc.Fine resolution identification of a neural fulcrum for the treatment of chronic cardiac dysfunction
US973771612 août 201422 août 2017Cyberonics, Inc.Vagus nerve and carotid baroreceptor stimulation system
US976413823 sept. 201619 sept. 2017Cyberonics, Inc.Implantable neurostimulator-implemented method for managing tachyarrhythmia through vagus nerve stimulation
US977059912 août 201426 sept. 2017Cyberonics, Inc.Vagus nerve stimulation and subcutaneous defibrillation system
US978931612 août 201617 oct. 2017Cyberonics, Inc.Neurostimulation and recording of physiological response for the treatment of chronic cardiac dysfunction
US980862616 sept. 20167 nov. 2017Cyberonics, Inc.Responsive neurostimulation for the treatment of chronic cardiac dysfunction
US20100257919 *29 oct. 200814 oct. 2010Toyo Seikan Kaisha, Ltd.Method and apparatus for inspecting pinhole in synthetic resin bottle
Classifications
Classification aux États-Unis250/343, 378/57
Classification internationaleG01M99/00, G01N23/02, G01N21/00
Classification coopérativeG01F23/0076, G01F23/0007, G01F22/00, G01F25/0061
Classification européenneG01F23/00, G01F23/26A, G01F23/288B, G01F23/00G1A
Événements juridiques
DateCodeÉvénementDescription
6 août 2007ASAssignment
Owner name: HEUFT SYSTEMTECHNIK GMBH, GERMANY
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HEUFT, BERNHARD;REEL/FRAME:019655/0562
Effective date: 20070618
9 mars 2017FPAYFee payment
Year of fee payment: 4